package hesselboom.easing;
class Bounce {
	public static function easeOut (t:Float, b:Float, c:Float, d:Float):Float {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	}
	public static function easeIn (t:Float, b:Float, c:Float, d:Float):Float {
		return c - easeOut(d-t, 0, c, d) + b;
	}
	public static function easeInOut (t:Float, b:Float, c:Float, d:Float):Float {
		if (t < d/2) return easeIn (t*2, 0, c, d) * .5 + b;
		else return easeOut (t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
}